Protector mechanism for looms



Patented Apr. 2S, 1925.

UNITED PATENT FiliiCE.

OSBORNE C. CASSELL, F WINCT-IESTER, VIRGINIA, ASSIGNOR TO CROMPTN 6cKNOWLES LOOM WORKS, OF NQRGESTFB, MASSACHUSETTS, A CORPORATION OFMASSACHSCEIITSi PROTECTOR MECHANISM FOR LOOMS.

Application filed May 21, 1.923. Serial No. 540,346.

To all whom t may concern:

Be it known that I, Osnonnn C. Gassner., a citizen oi the United States,residing at 1Winchester, in the county of Frederick and State oi'lVirginia, have invented a. new and useful Protector Mechanism for Looms,ci which the following is a speciiication.

This invention relates to protector mechanism for looms and moreparticularly to devices to stop the loom should the protector becomeinoperative because of a broken protector spring.

Protector mechanisms are used to stop the loom should the active shuttlefail to box properly and as usually constructed employ a protector rodhaving a dagger to engage knock-oftf mechanism and iingers to engage thebinders associated with theboxes on the ends Vof the lay. A coiledspring ordinarilysurrounds the rod and normally `holds the dagger up inknock-olii position until the shuttle enters vone of the boxes, at whichtime the binder and finger are actuated so as to move the dagger out ofknock-oit position against the action of the spring. Occasionally thespring breaks and the dagger :falls of its own weight to a position toclear the knock-ott mechanism. Obviously should a shuttle fail to boxunder these conditions the loom will continue to operate and a warpsmash will result.

It is the principal object ot my invention to provide means to stop theloom when the protector rod spring breaks and the devices to accomplishthis result may comprise an arm on the shipper handle and a dog on thelay held out of the path ot the arm until the spring breaks, at whichtime the dog will tall into the path. ot the arm and rock the shipperrod to stop the looni.`

With these and other objects in view which will appear as thedescription proceeds my invention resides in the combination andarrangement ot parts hereinafter described and claimed.

In the drawings- Fig. 1 is a -liront elevation of a loom embodying myinvention,

Fig. 2 is an end view looking in the direc tion of arrow 2 in Fig. 1,

Fig. 3 is an enlarged fragmentary top plan looking in the direction ofarrow 3 in Fig. 1, showing parts of the invention,

Fig'. 1 is a vertical section taken 4wd of Fig. 3, and

Fig; 5 is a Vvertical section taken 5-5 of Fig. t.

In the drawings, there is shown a loom having loomsides l0, a breastbeam 11, lay 12, shipper rod 13 and shipper handle 14. A lever 15pivoted at 16 is connected at its lower end to a rod 17 and has a pinand slot connection with the shipper handle. A protector rod 18 ismounted in bearings 1S) on the lay and has rigid therewith binderiingers 2() one of which is shown in Fig. 2) and a dagger 21. A lever 22pivoted at 22 to the under side of the breast beam has one end extendingin front of the shipper handle and the other end placed in the path ofthe dagger when the latter is in raised position. The parts are soarranged that the shipper handle is moved in a clockwise direction asviewed in Fig. 2 when it is desired to stop the loom.

A coiled spring 23 surrounds the protector rod and has one endstraightened and projecting under the lay as at 24 in Figs. 3 and 5. Theother end oi' the spring is held in a collar 25 adjustably set on therod 1S on line on line and in this way each finger 2O is held against iits binder 26, and dagger 21 is held in knoclc oft position. When ashuttle is properly boxed the binder 26 is pushed out to move the dagger21 down out of the path of lever 22 as the lay moves forward. When theshuttle fails to box the spring holds the dagger 21 in raised positionand as the lay advances the lever 22 is swung on its pivot to move theshipper handle to knock-ott position. All the parts thus far describedare ot the ordinary construction and operate in the usual manner.

My improvements include a dog 27 pivoted to the lay at 28 and providedwith a hook 29 which extends over the end 241; oi? the spring and servesto hold the dog in the full line position shown in Figs. 1 and 4. Solong as the spring 23 is intact the dog is held to one side but shouldthe spring break or the collar 25 work loose on the protector rod, thespring rotates on the rod and the end 24 moves out of supportingposition and the dog falls to the lowered position indicated in dottedlines in Fig. li. When in this position the lower end of the dog engagesan arm 30 clamped on the shipper rod 13 and as the lay advances theshipper rod is rocked in a clockwise direction to knock off the loom.

The lower end of arm 30 is cam shaped to ease the motion communicated tothe shipper shaft and the arm is adjustably set on the shaft by screws31 so that its position can be varied with respect to dog 27.

From the foregoing it is apparent that my improvements are extremelysimple and are effective to stop the loom as soon as a fault develops inthe coiled spring or its collar.

Having thus described my invention, it Will be evident that changes andmodifications may be made by those skilled in the art Without departingfrom the spirit and scope of the invention as set forth in the claims,and I do not Wish to be otherwise limited to the details hereindisclosed, but what I claim is:

l. In a loom having shipper mechanism, a lay, a protector rod and daggerthereon, and a spring to hold said dagger in knockolf position, thecombination of cooperating elements associated with the lay and shippermechanism, said elements beingl held in inoperative position so long asthe-spring is effective to vhold the protector dagger in knock-0Eposition, but being released to move to operative position to stop theloom when the spring becomes defective and incapable of holding thedagger in knock-oil' position.

2. In a loom having a lay, a protector rod and dagger thereon controlledby the shuttle, shipping mechanism and a spring to hold the protectordagger in knock-off position, the combination of a dog on the laynormally held inoperative by the spring but free to assume an operativeposition when the spring becomes inoperative to hold the protectordagger in knock-off position, and means associated With the shippermechanism to stop the loom when the dog assumes said operative position.

3. In a loom having shipper mechanism, a lay, a protector iod and daggerthereon and a spring normally holding the dagger in knock-off position,the combination of an arm connected to the shipper' mechanism, and meansmoving with the lay and normally held out of the path of the arm by thespring so long as the latter is intact, but said means being arranged onthe failure of said spring to hold the dagger in knoclvolf position toengage said arm and stop the loom.

In testimony whereof I have hereunto affixed my signature.

OSBORNE C. CASSELL.

